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当前，世界上开发利用的能源，主要是煤炭、石油、天然气，但储量十分有限。科学家们认为，按现在技术水平石油能开采30年，天然气40～50年。煤的储量虽然丰富，尚可供人类使用二三百年，但受环保的限制，煤的产量在下世纪也将达到高峰。从能源的产量与消耗量来看，除俄罗斯可
At present, the energy resources developed and utilized in the world are mainly coal, petroleum and natural gas, but the reserves are very limited. Scientists believe that according to the current state of the art oil can be exploited for 30 years and natural gas for 40 to 50 years. Although rich in coal reserves, is still available for human use two or three hundred years, but due to environmental constraints, coal production in the next century will reach its peak. From the energy yield and consumption point of view, except Russia can be